#checkerboard  a board having 64 squares of two alternating colors
  supertype:  #gameboard__board  a flat portable surface (usually rectangular) designed for board games; "he got out the board and set up the pieces"
  subtype:  #chessboard  a checkerboard used to play chess
  part of:  #checkers  #chess_game
  part:  #square.artifact  any artifact having a shape similar to a plane geometric figure with four equal sides and four right angles; "a checkerboard has 64 squares"
  part:  #diagonal.line  an oblique line of squares of the same color on a checkerboard; "the bishop moves on the diagonals"

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